Finding the Third Proportional to 172,909,328 and 267,443,964

Step by Step Solution

1. Step 1: Write the proportion equation
   172,909,328 : 267,443,964 = 267,443,964 : x
2. Step 2: Convert to fraction form
   172,909,328/267,443,964 = 267,443,964/x
3. Step 3: Cross multiply
   172,909,328x = 267,443,964 × 267,443,964
4. Step 4: Simplify right side
   172,909,328x = 71,526,273,880,033,296
5. Step 5: Solve for x
   x = 71,526,273,880,033,296/172,909,328
6. Step 6: Final answer
   x = 413,663,477.31